Mercury – Black Max 3-Blade Aluminum Propeller | 10.62" Diameter x 12" Pitch | Right-Hand Rotation | 3-Blade | Aluminum | Phantom Black Finish | 73134A45

Overview

There’s something reassuring about a prop that just works—trip after trip, tide after tide. The Mercury Black Max 3-Blade Aluminum Propeller (Part Number 73134A45) has that dependable feel. It’s the kind of prop you install once and forget about because it does everything you ask without complaint. You’ll notice how smoothly your outboard jumps onto plane and how steady it feels as you carve through chop or idle into the dock at sunset. This prop was built for boaters who appreciate reliability more than flash—because when you’re miles from shore, dependability isn’t optional.

Key Features

• Diameter & Pitch: 10.62" diameter x 12" pitch
• Rotation: Right-Hand
• Blade Count: 3-Blade design for balanced performance
• Material: Patented Mercalloy aluminum alloy for strength and flexibility
• Finish: Mercury Phantom Black glossy enamel for corrosion resistance
• Hub System: Includes Flo-Torq Reflex Hub Kit 835257K12 to protect drivetrain components
• Design Details: Precision-crafted for optimal thrust, smoother acceleration, and forgiving impact absorption

Engine & Boat Compatibility

• Designed for Mercury and Mariner 25-30 HP FourStroke BigFoot/Command Thrust outboards
• Fits 30 HP TwoStroke and 30 HP FourStroke (2005 and earlier) engines
• Compatible with 40–60 HP FourStroke outboards
• A great match for small runabouts, fishing boats, lightweight pontoons, and aluminum hulls that need dependable performance and easy handling

Performance Benefits

You’ll feel the difference the first time you throttle up. The Black Max grips the water confidently, giving you crisp acceleration without that annoying slip or cavitation. It delivers smooth cruising speeds with just the right amount of lift—ideal for carrying a few passengers or extra gear. The three-blade design keeps vibration low, so you can actually enjoy the hum of the motor instead of fighting it. Even after a long day, you’ll appreciate how steady and predictable it feels when docking or idling in tight quarters.

Built from Mercury’s own Mercalloy aluminum alloy, this prop handles light impacts better than most, bending slightly under stress instead of cracking. It’s easy to maintain, and the corrosion-resistant finish keeps it looking clean season after season. Whether you fish inland lakes or explore brackish channels, this prop holds up and keeps you moving.

Why is this prop a strong choice vs. alternatives?

• Balanced performance, cost, and durability: The Mercury Black Max 73134A45 hits the sweet spot between power and practicality—delivering dependable performance without the premium price tag.

• Factory-matched precision: Designed by the same Mercury engineers who build the engines it runs on, ensuring seamless compatibility and optimized efficiency.

• Effortless ownership: Easy to install, easy to maintain, and built to last—perfect for boaters who just want to get out on the water and enjoy the ride.

• Forgiving under pressure: Unlike stainless props, its durable aluminum design can flex slightly on impact, helping protect your drivetrain if you strike an unseen log or sandbar.

• Smart, reliable investment: Whether you’re a weekend cruiser or a dedicated angler, this propeller delivers trusted Mercury quality and real-world value that lasts season after season.

FAQ Section

Q1: Which Mercury engines does the Black Max 73134A45 fit?

It’s designed for Mercury and Mariner 25-30 HP FourStroke BigFoot/Command Thrust, 30 HP TwoStroke, 30 HP FourStroke (2005 and earlier), and 40-60 HP FourStroke outboards.

Q2: What makes this propeller different from other Mercury options?

The Black Max uses Mercury’s proprietary Mercalloy aluminum, which provides an ideal balance between strength and flexibility. It’s also equipped with a Flo-Torq Reflex Hub to absorb shock and protect your drivetrain.

Q3: How do I know if this pitch or size is right for my boat?

A 12-pitch prop like this one is perfect for smaller boats that need strong acceleration and mid-range performance. Check your owner’s manual or consult a Mercury dealer to confirm the ideal pitch for your load and speed goals.

Q4: Can this prop be used in both saltwater and freshwater?

Yes. The Phantom Black enamel finish resists corrosion, making it equally reliable in freshwater lakes and saltwater bays.

Q5: What hub system does it use?

It comes with the Flo-Torq Reflex Hub Kit 835257K12, designed to cushion minor impacts and safeguard the prop shaft and drivetrain.